<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片试图 -->
    <el-card>
      <!-- 添加角色按钮qu -->
      <el-row>
        <el-col>
          <el-button type="primary">添加角色</el-button>
        </el-col>
      </el-row>

      <!-- 角色列表去 -->
      <el-table :data="rolelist" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <!-- eslint-disable-next-line -->
          <template slot-scope="scope">
            <el-row
              :class="['dbbottom', i1 === 0 ? 'dbtop' : '', 'vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <!--渲染一级权限 -->
              <el-col :span="5">
                <el-tag
                  @close="removeRightById(scope.row, item1.id)"
                  closable
                  >{{ item1.authName }}</el-tag
                >
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级权限和三级权限 -->
              <el-col :span="19">
                <!-- 通过for循环 嵌套渲染二级权限-->
                <el-row
                  :class="[i2 === 0 ? '' : 'dbtop', 'vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      @close="removeRightById(scope.row, item2.id)"
                      closable
                      >{{ item2.authName }}</el-tag
                    >
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      type="warning"
                      v-for="item3 in item2.children"
                      :key="item3.id"
                      @close="removeRightById(scope.row, item3.id)"
                      closable
                      >{{ item3.authName }}</el-tag
                    >
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <!-- eslint-disable-next-line -->
          <template slot-scope="scope">
            <el-button size="mini" type="primary" icon="el-icon-edit"
              >编辑</el-button
            >
            <el-button size="mini" type="danger" icon="el-icon-delete"
              >删除</el-button
            >
            <el-button
              size="mini"
              type="warning"
              icon="el-icon-setting"
              @click="showSetRightDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 分配权限的对话框 -->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%" @close="setRightDialogClosed"
    >
    <!-- 树形空间 -->
      <el-tree :data="rightlist" :props="treeProps" show-checkbox node-key="id" 
      default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights"
          >确 定</el-button
        >
      </span> </el-dialog
    >
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 所有角色列表数据
      rolelist: [],
    //   控制分配权限对话框的显示与隐藏
      setRightDialogVisible : false,
    //   所有权限的数据
      rightlist:[],
    //   树形控件的属性绑定对象
      treeProps:{
          label:'authName',
          children:'children'
      },
    //   默认选中的节点Id值数组
      defKeys:[],
    //   当前即将分配权限的角色id
      roleId:''
    };
  },
  created() {
    this.getRolesList();
  },
  methods: {
    // 获取所有角色的列表
    async getRolesList() {
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败！");
      }
      this.rolelist = res.data;
    },
    //根据id删除对应的权限
    async removeRightById(role, rightId) {
      //弹框提示用户是否要删除
      const cofirmResult = await this.$confirm(
        "此操作将永久删除该文件, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      if (cofirmResult !== "confirm") {
        return this.$message.info("取消删除");
      }

      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      );
      if (res.meta.status !== 200) {
        return this.$message.error("删除权限失败！");
      }

      // this.getRolesList()
      role.children = res.data;
    },
    // 展示分配权限的对话框
   async showSetRightDialog(role) {
       this.roleId=role.id
        // 获取所有权限列表
     const{data:res}=  await this.$http.get(`rights/tree`)

     if(res.meta.status!==200){
         return this.status.error('获取权限数据失败！')
     }
    //  获取权限数据保存到data中
     this.rightlist = res.data

    //  递归获取三级节点的Id
     this.getlLeafKeys(role,this.defKeys)

     this.setRightDialogVisible = true


    },
    // 通过递归的形式，获取角色下所有三级权限的id 并保存到defkeys数组中
    getlLeafKeys(node,arr){
        // 如果当前node不包含children属性，则是三级节点
        if(!node.children){
            return arr.push(node.id)
        }
        node.children.forEach(item=> {
            this.getlLeafKeys(item,arr)
        });
    },
    // 监听分配权限对话框的关闭事件
    setRightDialogClosed(){
        this.defKeys=[]
    },
    //点击为角色分配权限
   async allotRights(){
        const keys=[
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
        ]
        const idStr=keys.join(',') 
      const{data:res} = await 
        this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})

        if(res.meta.status !==200){
            return this.$message.error('分配权限失败')
        }
        this.$message.success('分配权限成功')
        this.getRolesList
        this.setRightDialogVisible=false
    }
  },
};
</script>

<style lang="less" scoped>
html,
body,
#app {
  height: 100%;
  margin: 0;
  padding: 0;
  min-width: 1366px;
}
.el-breadcrumb {
  margin-bottom: 15px;
  font-size: 12px;
}
.el-card {
  box-shadow: 0 1px rgba(0, 0, 0, 0.15) !important;
}
.el-table {
  margin-top: 15px;
  font-size: 12px;
}
.el-pagination {
  margin-top: 15px;
}
.el-tag {
  margin: 7px;
}
.dbtop {
  border-top: 1px solid #eee;
}
.dbbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>